⁴⁷Co — Unstable · t½ ≈ 370 ms · Decay: β⁺ → ⁴⁷Fe · Type: synthetic · Uses: research.
⁴⁸Co — Unstable · t½ ≈ 150 ms · Decay: β⁺ → ⁴⁸Fe · Type: synthetic · Uses: research.
⁴⁹Co — Unstable · t½ ≈ 330 ms · Decay: β⁺ → ⁴⁹Fe · Type: synthetic · Uses: research.
⁵⁰Co — Unstable · t½ ≈ 44 ms · Decay: β⁺ → ⁵⁰Fe · Type: synthetic · Uses: research.
⁵¹Co — Unstable · t½ ≈ 70 ms · Decay: β⁺ → ⁵¹Fe · Type: synthetic · Uses: research.
⁵²Co — Unstable · t½ ≈ 115 ms · Decay: β⁺ → ⁵²Fe · Type: synthetic · Uses: research.
⁵³Co — Unstable · t½ ≈ 240 ms · Decay: β⁺ → ⁵³Fe · Type: synthetic · Uses: research.
⁵⁴Co — Unstable · t½ ≈ 193 ms · Decay: β⁺ → ⁵⁴Fe · Type: synthetic · Uses: research.
⁵⁵Co — Unstable · t½ ≈ 17.5 h · Decay: EC → ⁵⁵Fe · Type: activation · Uses: tracer in protein metabolism.
⁵⁶Co — Unstable · t½ ≈ 77.2 d · Decay: β⁺/EC → ⁵⁶Fe (γ cascade) · Type: activation product · Uses: industrial radiography, γ source.
⁵⁷Co — Unstable · t½ ≈ 271.8 d · Decay: EC → ⁵⁷Fe · Type: activation product · Uses: vitamin B12 tracer, Mössbauer calibration.
⁵⁸Co — Unstable · t½ ≈ 70.9 d · Decay: β⁺/EC → ⁵⁸Fe (γ 810 keV) · Type: activation · Uses: radiation source, reactor monitoring.
⁵⁹Co — Stable · — · Type: stable (primordial) · Uses: essential in B12, ⁵⁹Co-NMR, alloys.
⁶⁰Co — Unstable · t½ ≈ 5.27 y · Decay: β⁻ → ⁶⁰Ni (γ 1.17, 1.33 MeV) · Type: activation product · Uses: cancer radiotherapy, γ radiography, sterilization.
⁶¹Co — Unstable · t½ ≈ 1.65 h · Decay: β⁻ → ⁶¹Ni · Type: synthetic · Uses: research.
⁶²Co — Unstable · t½ ≈ 1.5 min · Decay: β⁻ → ⁶²Ni · Type: synthetic · Uses: research.
⁶³Co — Unstable · t½ ≈ 26 s · Decay: β⁻ → ⁶³Ni · Type: synthetic · Uses: research.
⁶⁴Co — Unstable · t½ ≈ 0.3 s · Decay: β⁻ → ⁶⁴Ni · Type: synthetic · Uses: research.
⁶⁵Co — Unstable · t½ ≈ 0.15 s · Decay: β⁻ → ⁶⁵Ni · Type: synthetic · Uses: research.
⁶⁶Co — Unstable · t½ ≈ 0.12 s · Decay: β⁻ → ⁶⁶Ni · Type: synthetic · Uses: research.
⁶⁷Co — Unstable · t½ ≈ 0.11 s · Decay: β⁻ → ⁶⁷Ni · Type: synthetic · Uses: research.
⁶⁸Co — Unstable · t½ ≈ 0.09 s · Decay: β⁻ → ⁶⁸Ni · Type: synthetic · Uses: research.
⁶⁹Co — Unstable · t½ ≈ 0.07 s · Decay: β⁻ → ⁶⁹Ni · Type: synthetic · Uses: research.
⁷⁰Co — Unstable · t½ ≈ 0.05 s · Decay: β⁻ → ⁷⁰Ni · Type: synthetic · Uses: research.
⁷¹Co — Unstable · t½ ≈ 0.04 s · Decay: β⁻ → ⁷¹Ni · Type: synthetic · Uses: research.
⁷²Co — Unstable · t½ ≈ 30 ms · Decay: β⁻ → ⁷²Ni · Type: synthetic · Uses: research.
⁷³Co — Unstable · t½ ≈ 25 ms · Decay: β⁻ → ⁷³Ni · Type: synthetic · Uses: research.
⁷⁴Co — Unstable · t½ ≈ 20 ms · Decay: β⁻ → ⁷⁴Ni · Type: synthetic · Uses: research.
⁷⁵Co — Unstable · t½ ≈ 15 ms · Decay: β⁻ → ⁷⁵Ni · Type: synthetic · Uses: research.
Cobalt — isotope count: 29 total · Stable: 1 (⁵⁹Co) · Unstable: 28. (All isotope data: IAEA LiveChart, NUBASE2020; applications from ENSDF and nuclear medicine/industry references.)
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